Overview
The ITA25B3 is a bidirectional Transil array produced by STMicroelectronics, designed for high overvoltage protection in data transmission lines. This component is particularly suited for protecting voltage-sensitive devices such as those using MOS technology and low-voltage supplied ICs. The ITA25B3 offers instantaneous response to transient overvoltages, making it an essential component in various communication systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (8/20 µs) | 300 | W |
| Peak Pulse Current (8/20 µs) | 40 | A |
| Wire I2t Value | 0.6 | A²s |
| Maximum Operating Junction Temperature | 125 | °C |
| Storage Temperature Range | -55 to +150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C |
| Stand-off Voltage (VRM) | 25 | V |
| Breakdown Voltage (VBR) | 25 | V |
| Clamping Voltage (VCL) | 31 | V |
| Leakage Current (IRM) | 1 µA | µA |
| ESD Protection | Up to 15 kV | kV |
Key Features
- High surge capability: Peak pulse power of 300 W and peak pulse current of 40 A (8/20 µs)
- Separated input/output configuration to eliminate spikes induced by parasitic inductances
- Up to 9 bidirectional Transil functions
- Low clamping factor (VCL/VBR) at high current levels
- Low leakage current
- ESD protection up to 15 kV, complying with IEC 61000-4-2 level 4 and MIL STD 883G- Method 3015-7: class 3B
Applications
- Differential data transmission lines protection, such as RS-232, RS-423, RS-422, and RS-485
- Protection of voltage-sensitive devices in communication systems
Q & A
- What is the ITA25B3 used for?
The ITA25B3 is used for high overvoltage protection in data transmission lines, particularly for protecting voltage-sensitive devices such as those using MOS technology and low-voltage supplied ICs
- What are the key specifications of the ITA25B3?
The ITA25B3 has a peak pulse power of 300 W, peak pulse current of 40 A (8/20 µs), and a stand-off voltage of 25 V. It also offers ESD protection up to 15 kV
- What is the significance of the separated input/output configuration in the ITA25B3?
The separated input/output configuration helps in eliminating the spikes induced by parasitic inductances created by external wiring, thus providing improved protection against very fast transient overvoltages like ESD
- What are the typical applications of the ITA25B3?
The ITA25B3 is typically used for differential data transmission lines protection, such as RS-232, RS-423, RS-422, and RS-485
- Does the ITA25B3 comply with any industry standards?
Yes, the ITA25B3 complies with IEC 61000-4-2 level 4 and MIL STD 883G- Method 3015-7: class 3B for ESD protection
- What is the maximum operating junction temperature of the ITA25B3?
The maximum operating junction temperature of the ITA25B3 is 125°C
- Is the ITA25B3 still in production?
No, the ITA25B3 has been obsolete for many years
- What are the packaging options for the ITA25B3?
The ITA25B3 is available in SO-20 packages, with options for tube and tape and reel packaging
- How does the ITA25B3 protect against ESD?
The ITA25B3 provides ESD protection up to 15 kV through its clamping action and separated input/output configuration
- What happens if the ITA25B3 fails due to overload?
If the ITA25B3 fails due to overload, it may present a short-circuit followed by an open circuit caused by the wire melting
